Draft and buffing rigging.



R. D. GALLAGHER, 1H. DRAFT AND BUFFING RIGGING.

No. 69UJ39. Patented Dec. 3l, |90I.

(Application fxled Aug. 26, 1901.)

(No Model.) 3 Sheets-Sheet l.

j' f @y iunnnn* i aim/1 l ./Tv |77 @wm ma 5 @L4M/M No. 691],I39. Patented Dec. 3|, |901. n. n. GALLAGHEH, 1n. DRAFT AND BUFFING RIGGING. (Application led Aug. 26, 1901.)

(No Model.)

No. 690,!39. Patented Dec. 3|, I90I.

R. D. GALLAGHER, IR.

DRAFT AND BUFFING RIGGING. (Application led Aug. 26, 1901.) (No Model.) 3 Sheets-Sheet 3.

fu f? e e 1\. Q ^3 Il lf A Q V e writeln STA-*rus PATET FFICE.

RICHARD D. GALLAGHER, JR., OF NEl/V YORK, N. Y., ASSIGNOR TO STAND- ARD OOUPLER COMPANY, OF NFNV YORK, N. Y., A CORPORATION OF NEV JERSEY.

DRAFT AND BUFFING RIGGING.

SPECIFICATION forming' part 0f Letters Patent NO. 690,139, dated December 31, 1901.

Application filed August 26, 1901. Serial No. 73,288. @lo model.)

To a/ZZ whom it 7230.1/ concern:

Be it known that LRIOHARD D. GALLAGHER, Jr., a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Draft and Bufting Rigging; and I hereby declare the following to be a full, clear, and exact description of the same, refer encebeinghad to the accompanying drawings,

ro forming a part of this specification, and to the figures of reference marked thereon.

This invention relates to improvements in rigging as designed more especially for use in connection with the draft-rigging for railway-cars, although its application is not limited to such use.

The type of rigging to which the present invention relates is similar to that described in my prior patent, No. 677,654, and in my zo contemporaneous applications, Serial Nos.

73,287 and 73,289; and the objects of the improvements herein are to simplify the construct-ion of the apparatus, enabling the friction and wedging effects of friction elements arranged at one end of the rigging to be utilized in augmenting the power of resistance of the spring under strains in either direction-as, for instance, draft strains or bufiing strains-thereby permitting ofthe production 3o of a relativelyshort rigging, inasmuch as but a single set of friction elements is necessary, and consequently the rigging may loe mounted conveniently in the space ordinarily allowed for such purposes.

The invention consists incertain novel details of construction and combinations and arrangements of parts, all as will be now described, and pointed out particularly in the appended claims.

4o Referring to the accompanying drawings,

Figure l is a section through a rigging embodying the present improvements. Fig. 2 is a similar section showing a reverse arrangement of the friction elements. Fig. 3 is a similar view showing another modification in the arrangement of the support for the friction element. Fig. 4 is a similar view showing a single wedge-block with the form of connection illustratedin Fig. Fig. 5 shows 5o a similar arrangement with the form of conism into action.

nection illustrated in Figs. 1 and 2. Fig; 6 is a similar View showing the elements arranged iu a cylindrical casing. Fig. 7 isa section on the line 7 7 of Fig. G looking toward the left. Fig. Sis a perspective View of the wedge-block illustrated in Figs. 6 and 7. Like numerals of reference in the several figures indicate the same parts.

In all of the figures the numeral l indicates the draft-timbers, underframing, or othero part of the car or structure to which the riggingis applied, these parts being represented conventionally, inasmuch as they may be of any ordinary or usual type, and the invention is therefore not to be restricted in this parn ticular. In all of said figures the numeral 2 indicates the spring or springs, and it will loe understood that these springs may be twin springs, single springs, double springs, or tandem springs, all as in the ordinary or com- 7o mon types of draft-rigging. Follower-plates 3 and l are mounted between suitable stops 5 in or on the draft-timbers and are adapted to be surrounded by the pressure-transA mitting member, which usually consists ot' 75 the draw-bar 6, having the strap 7 attached thereto. Buftiug or draft strains transmitted through the draw-bar and strap will move the follower-plates 3 or 4 inwardly, depending upon the direction of the strain, and the pres- 8o ent improvements are designed to resist such movement of the follower-plates and lo create a resistance which will be greater than the normal resistance of the springs themselves, but at the same time it is preferred to provide for a limited direct compression of the springs, whereby slight or initial strains may be directly absorbed by the springs without throwing the resistance-augmenting mechan- To accomplish these results, 9o one ofthe follower-plates, preferably the plate a at the forward end of the rigging, is provided with one or more inclines S, which inclines, as illustrated in Fig. l, are formed on a central projection or wedge-like structure which pro 95 jects rearwardly from the plate 4; but it will be understood, of course, that inclines may be on a separate piece or member and move with said follower-plate. Wedge-blocks 9 coperate with the inclines S and also with inclincs roo r the stems strike the follower-plate 3.

10, which through connections 11 extend back and are connected with a plate 12, which supports the rear ends of the springs 2. These plates may be conveniently termed followers. At the forward ends said springs bear against another follower 13, which follower 13 is provided with a friction-face or frictionfaces, against which the wedge-blocks 9 rest. Inward movement of the follower 13 to a limited extent is permitted; but stops are provided for limiting such movement, and these stops are shown in Fig. 1 in the form of stems 14, which pass through the follower 12 and are adapted to abut against the follower-plate 3, a slight space being left between the ends of the stems and the follower-plate. With such construction inward movement of the follower plate 4 initially compressesl the spring with little added resistance owing to the fact that the follower 13 can retreat until When this occurs, further movement of the followerplate will by reason of the action of the inclines 8 cause the transverse displacement of the wedge-blocks, and such transverse displacement of the wedge-blocks creates a pressure against theAinclines 10, moving the latter longitudinally and in a direction reverse to the movement ofthe follower-plate and drawbar, thereby advancing the follower 12 and rear ends of the springs. From this it will be seen that the initial compression of the spring takes place from the forward end, while the final compression takes place from the rear end, if the strain be a bufling strain. If the strain be a draft strain, the follower-plate 3 is drawn forwardly until it contacts with the stems 14 of the follower 13. Further movement in this direction causes the followers 13 to advance; but inasmuch as the inclined faces 8 cannot move forwardly the wedgeblocks 9 will be displaced transversely, and acting on the inclines 10 will cause the forward movement of said inclines 10, and such forward movement of the inclines 10 will be in proportion more rapid than the forward movement of the follower 3, and consequently the springs 2 will be put under compression through the medium of the follower 12 i-n the same direction.

The principle involved in the structure just described it is obvious may be applied in a number of different embodiments and the remaining figures of the drawings represent types of such embodiments; but said figures by no means represent all of the embodiments vof the invention which it would be possible to make.

Figs. 2 and 3 correspond closely to the arrangement shown in Fig. 1 save that the arrangement of the inclines with which the wedge-blocks cooperate are reversed-that is to say, in said figures the inclines 15 are mounted on the follower-plate 4 and correspond to the inclines S, only their angle of inclination is in the opposite direction to the inclines 8, while the inclines 16, corresponding'to the inclines 10, are connected by acentral support 17 with the rear follower 12, and the wedge-blocks 9 are located in thechambers between the'inclines 15 16 and the Vfront faces of the follower 13. The stems 14 of the follower 13 pass through the follower 12, as in Fig. 1, and are adapted to bearagainst the rear follower-plate 3.

In Fig. 3 the construction is identical with that in Fig. 2 save that the follower 13 instead of being supported by stems passing through the follower 12 is in this instance Supported by exterior supports in the form of a casing or casing-sections 1S, which may be made integral with said follower 13 at the forward end and integral with the follower 3 at the rear end.

In operation the structures shown in Figs. 2 and 3 aref in all respects similar to that shown in Fig. 1 save that under `similar movements the wedge-blocks 9 are disposed transversely in an opposite direction to the displacement which occurs in said Fig. 1, and the results effected are identical. In Fig. 3, however, no provision is made for permitting of a preliminary compression of the spring without developing the resistance of the friction elements, as in Figs. 1 and 2, where the stems 14 do not normally rest in contact with the follower 3, but are allowed a limited independent movement.

Figs. 4, 5, and 6 illustrate simple embodiments of the invention and correspond to one-half of the structure illustrated in Figs. 3 and 1, respectively. In Fig. 4 the forward follower-plate 19 is made with au inwardlyextending casing 20, having on its inner side an incline 21, while the rear follower-plate 22 is formed with a forwardly-extending support 23, having at its forward end a follower 24. The rear follower 25 is provided with a for; wardly-extending support 26, having at its forward end an incline 27, and the single wedge-block 28 isY mounted in the chamber formed between the inclines 2l 27 andthe forward or friction face of thev follower 24. The spring is mounted between the followers 24 and 25 and rearward movement of the follower 25 is prevented by its contact with the follower-plate 22. In Fig. 5 the same general construction and arrangement are followed. The casings on the front follower-plate 19 and rear follower 25 are made to overlap, thereby protecting the interior working parts, and the follower 24 instead of being supported by an exterior support, as in Fig. 4, is in this instance supported by a stem 29, corresponding to the stems 14 heretofore described, and working through the follower 25 with a limited free movement.

In Figs. 6, 7, and 8 the construction is similar to that shown in Fig.- 5, in so far as the operation of the parts is concerned, but in these figures a casing and general construction circularin cross-section is provided with a view to permitting of the manufacture and application of a relatively small and light IIO l ceone structure well adapted for substitution in lieu of the ordinary buffer-springs now in common use. By reference to Fig. 7 it will be seen that the follower-plate 30, Fig. 6, has a rearwardly-projecting cylindrical casing 3l, within which slides a forwardly-projecting casing 32 on the rear follower 33. This casing 32 at one side extends forwardly a sufficient distance for the application or formation of an incline 33, while the opposite incline 34 is located in the casing 31. The wedge-block is shown in perspective in Fig. 8 and is formed with curved exterior faces 35 and flat inclines 3G, adapted to coperate with the inclines 33 and 34. The follower 37 is adapted to be supported by a stem 3S, passing through an opening in the follower 33 and adapted to contact with the follower-plate 39, while the spring is confined between the followers 33 and 37 and a limited play is allowed between the stem 3S and follower-plate 39. In these three constructions-namely, those illustrated in Figs. 4 to S-rearward movement of the forward followers causes transverse displacement of the wedge-blocks, which transverse displacement acting on the inclines connected with the rear followers advances the latter and compresses the springs from the rear end, while pressure in the opposite direction on the rear follower-plate forces the Wedge-blocks forwardly and transversely, thereby again compressing the spring from the rear end through the connection between the inclines 27, Figs. 4 and 5, or 33, Fig. 6, and rear followers, as will be readily understood from the description of the operation of the construction shown in Fig. l.

In every instance it will be observed that with a single set of friction elements located at one end of a spring or springs and through the connection between one of said elements and a follower at the opposite end of the spring said spring is compressed by the action of said friction elements from its rear end under strains applied in eitherdirection. The construction dispenses with a multiplication of parts, and at the same time the power of resistance offered by the spring is vastly augmented to resist strains in either direction by the action of the friction elements, and the same friction elements located at one end of the spring are operative to augment such resistance to strains in either direction.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a rigging such as described, the combination of the following instrumentalities, to wit: a press ure-transmittin g member adapted to transmit pressure in opposite directions to opposite ends of a yielding member, a yielding pressure-resisting member arranged in alinement therewith, friction elements located at one end of the yielding member and connections, independent of the pressuretransmitting member, between said friction elements andboth ends of the yielding member, whereby said friction elements are held together by said yielding member and are operative to augment the resistance of said member to strains in either direction; substantially as described.

2. In a rigging such as described, the combination with a pressure-transmitting member and a yielding pressure-resistingmember, of friction elements located at one end of the yielding member and having friction-faces arranged at an angle with relation to each other, one of said elements being moved in one direction by the pressure-transmitting member under strains in one direction and another of said elements being moved in the opposite direction by said member under strains in the opposite direction, a third one of said elements being connected with the end of the spring opposite that at which the elements are located and a block interposed between the friction-faces of said elements, whereby the resistance of the spring is augmented by said friction elements under strains in either direciion; substantially as described.

3. In a rigging such as described, the combination with a yielding pressure-resisting member, followers between which it is confined, both having friction-faces located at one end of the yielding member and arranged at an angle with respect to each other, and a wedge loosely mounted between said faces, of a pressure-transmitting member engaging one of said followers to advance the same under pressure in one direction, an incline moving in the opposite direction with said pressuretransmitting member and cooperating with the wedge, whereby, upon movement of the pressure-transmitting memberin either direction, said wedge is displaced angularly and the rear follower thereby advanced against the tension of the yielding member; substantially as described.

4. In a rigging such as described, the combination with three friction elements each having a friction-face arranged at an angle to the others, a wedging member interposed between said faces, and stops for limiting the outward movement of two of said elements while permitting them to move inwardly, of a pressure-transmitting member engaging one of said two elements when moved in one direction and the other ofsaid two elements when moved in the opposite direction to displace the wedge and cause a movement of the third element in one direction, and a spring for resisting such movement of the third element.

5. In a rigging such as described, the combination with the spring confined between followers, one of said followers having a projection extending into proximity to the other follower, f riction-faces on said projection and other follower arranged at an angle to each other and a wedge member interposed between said faces, of follower-plates, one having a friction-face arranged at an angle to the other friction-faces and coperating with the wedge IOO IOS

IIO

' plates and a pressure-transmitting member coperating with thefollower-plates; substantially as described. A

6. In a rigging such as described, the conmbination with a pressure-resisting spring, followers between which said spring is conlined, movable toward and from each other, a friction-face on the outer surface ot' one of said followers, a friction-face arranged at an angle thereto and connected with the opposite follower by a connection extending past the spring, and a follower-plate against which the last-mentioned follower abuts, of a wedging member interposed between said frictionfaces, a second follower-plate having a friction-face arranged atan angle to the other friction-faces and cooperating with said wedging member and a pressure-transmitting member cooperating with said follower-plates, whereby under the influence of pressure in either direction, the wedging member is displaced transversely and the rear follower advanced against the tension of the spring; substantially as described.

7. In a rigging such as described, the combination with a follower, a spring con lined by said follower and a support for limiting the movement of said follower in a direction to compress the spring, said follower having a friction-face on its outer side, a second follower located at the opposite end of the spring and movable in a direction to compress the spring, a projection connected with said follower and having a friction-face arranged at an angle to the friction-face on the opposite follower, and a wedging member interposed between said faces, of a follower-plate having a friction-face arranged at an angle to the aforesaid friction-faces and adapted to cooperate with the wedging member, stops for limiting the outward movement of said follower-plate and follower at the opposite ends of the spring, respectively, and a pressuretransmitting member for moving said follower inwardly by the transverse displacement of the wedging member; substantially as described.

8. In a rigging such as described, the combination with a follower, a spring confined by said follower, supports for said follower, means for limiting the movement of said follower in a direction to compress the spring while permitting said follower to move to a limited extent in said direction, a follower at the opposite end of the spring, a projection on said follower having a friction-face arranged at an angle to the outer face of the first-mentioned follower and a wedging member located between said faces, of a follower-plate having a friction-plate arranged at an angle to the first-mentioned friction-faces and cooperating with said wedging member, anda wardly, displace the wedging member transversely and advance the rear follower in an opposite direction; substantially as described.

9. In a rigging such as described,'the combination of a pressure-resisting spring,a follower located at one end of said spring and having a limited movement in a direction to compress said spring with means forlimiting such movement, a follower located at the opposite end of the spring, a projection carried by said last-mentioned follower andhaving a friction-face arranged at an angle to the outer face of the first-mentioned follower, a wedging member located between said faces, a follower-plate having a friction-face arranged at an angle to the first-mentioned frictionfaces and cooperating with the wedging member`and a pressure-transi'nitting member surrounding said follower-plate, followers and-v spring and adapted to displace the wedging member transversely under pressure in either direction to move the follower in rear of the spring in one direction; substantially as described. y

l0. ln a rigging such as described, the combination with follower plates, and stops for limiting the outward movement of said platesk and a pressure-transmitting member for moving said plates'inwardly, of followers located between said plates, a spring interposed between said followers,one of said followers havl ing a supporting projection adapted to contact with the follower-plate at the opposite end of the spring. to limit the inward movement of said follower, a projection on the opposite follower having an inclined frictionface arranged at an angle to the outer face of the other follower, a wedging member interposedbetween the face of said last-mentioned follower and friction-face and a projection moved by one of the follower-plates and having a friction-face arranged at an angleto said first-mentioned friction-face and coperating with the wedging member to displace the same transversely; substantially as described.

A 11. In a rigging such as described,the combination with followerplates, followers located intermediate said plates and one having a supporting projection working past the other and cooperating with the follower-plate, a spring confined between saidfollowers,a projection on one of said followers extending beyond the other follower and havinga frictionface therein arranged at an angle to the outer face of said other follower, a wedging member interposed between said faces and a cooperating friction-face moving with one of said follower-plates for displacing said wedging member transversely to advance the follower at the opposite en'd of the spring, substantially as described.

l2. In a rigging such as described,the combination with follower-plates, followers interposed between said plates, one of said followers having a supporting-stem extending through the opposite follower and adapted to IOO IIO

Ael

Contact with the follower-plate and a spring have a limited movement toward and from confined between said followers, of a projeeeach other preliminary to the final movement tion on one of said followers having an ininvolvingr the compression of the spring olined friction-face arranged at an angle to through the transverse displacement of the the outer face of the other follower, a wedgwedging member; substantially asdescribed. ing member interposed between said faces RICHARD D. GALLAGHER, JR.

and a projection having an inclined face movi Witnesses:

H. R. I-IoWENsTEIN, J. B. PEYTON, Jr.

ing with one of the follower-plates, the arrangement being such that said followers l 

